T5 4th

[lambro]

Any known reasons if a T5 4th wont work on an early P2 box?
The one with the offset cruciform and spacer washer on the selector shaft.

Shaun.

[goldeneye]

use an early px125 4th gear instead.

[Norrie Bodge]

P125X is the equivalent with early type P2 gearboxs m8

[lambro]

Cheers chaps.
What if one had been fitted, will it be ok to stay in there?
Mate has one in, and is suffering 'lurching' for want of a better word in 4th when warm.
Like the power is being switched on and off, just fitted a clutch for him as he described it as 'slipping'.
Only then did the actual description of fault become freely available

[gaz_powell]

it will never work correctly - early and late cogs are not compatible - they may have the same amount of teeth and mesh but the faces are different so wont mesh correctly/work together

[lambro]

Hi,
Sorry for the delay.
Got mates engine in bits and am looking at the 4th gear but have no comparison.
Is there a list of what gears should be in there, size/type thing.
Like Stickys Lambretta guide but Vespa orientated?

Any tips/pointers welcomed.

[lambro]

I found a gear page on Beedies site,
It lists the P200 as loose gears:
57/42/38/35

I have counted another shaft and gears I have here with the early cruciform, and they match.

The one I have stripped counts up as:
57/42/38/36 and the 4 gears from both boxes look totally different to each other on the face that slides down the shaft.

Is this where the problem lies, as thought a T5 4th in an early box??


Also gearbox with problems has an inner shim on the shaft, spare layshaft and loose gears has no inner shim, just the outer one

Shaun.